sound/soc/codecs/wm8510.c

   1 /*
   2  * wm8510.c  --  WM8510 ALSA Soc Audio driver
   3  *
   4  * Copyright 2006 Wolfson Microelectronics PLC.
   5  *
   6  * Author: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #include <linux/module.h>
  14 #include <linux/moduleparam.h>
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/delay.h>
  18 #include <linux/pm.h>
  19 #include <linux/i2c.h>
  20 #include <linux/platform_device.h>
  21 #include <sound/core.h>
  22 #include <sound/pcm.h>
  23 #include <sound/pcm_params.h>
  24 #include <sound/soc.h>
  25 #include <sound/soc-dapm.h>
  26 #include <sound/initval.h>
  27
  28 #include "wm8510.h"
  29
  30 #define AUDIO_NAME "wm8510"
  31 #define WM8510_VERSION "0.6"
  32
  33 /*
  34  * Debug
  35  */
  36
  37 #define WM8510_DEBUG 0
  38
  39 #ifdef WM8510_DEBUG
  40 #define dbg(format, arg...) \
  41         printk(KERN_DEBUG AUDIO_NAME ": " format "\n" , ## arg)
  42 #else
  43 #define dbg(format, arg...) do {} while (0)
  44 #endif
  45 #define err(format, arg...) \
  46         printk(KERN_ERR AUDIO_NAME ": " format "\n" , ## arg)
  47 #define info(format, arg...) \
  48         printk(KERN_INFO AUDIO_NAME ": " format "\n" , ## arg)
  49 #define warn(format, arg...) \
  50         printk(KERN_WARNING AUDIO_NAME ": " format "\n" , ## arg)
  51
  52 struct snd_soc_codec_device soc_codec_dev_wm8510;
  53
  54 /*
  55  * wm8510 register cache
  56  * We can't read the WM8510 register space when we are
  57  * using 2 wire for device control, so we cache them instead.
  58  */
  59 static const u16 wm8510_reg[WM8510_CACHEREGNUM] = {
  60         0x0000, 0x0000, 0x0000, 0x0000,
  61         0x0050, 0x0000, 0x0140, 0x0000,
  62         0x0000, 0x0000, 0x0000, 0x00ff,
  63         0x0000, 0x0000, 0x0100, 0x00ff,
  64         0x0000, 0x0000, 0x012c, 0x002c,
  65         0x002c, 0x002c, 0x002c, 0x0000,
  66         0x0032, 0x0000, 0x0000, 0x0000,
  67         0x0000, 0x0000, 0x0000, 0x0000,
  68         0x0038, 0x000b, 0x0032, 0x0000,
  69         0x0008, 0x000c, 0x0093, 0x00e9,
  70         0x0000, 0x0000, 0x0000, 0x0000,
  71         0x0003, 0x0010, 0x0000, 0x0000,
  72         0x0000, 0x0002, 0x0001, 0x0000,
  73         0x0000, 0x0000, 0x0039, 0x0000,
  74         0x0000,
  75 };
  76
  77 /*
  78  * read wm8510 register cache
  79  */
  80 static inline unsigned int wm8510_read_reg_cache(struct snd_soc_codec *codec,
  81         unsigned int reg)
  82 {
  83         u16 *cache = codec->reg_cache;
  84         if (reg == WM8510_RESET)
  85                 return 0;
  86         if (reg >= WM8510_CACHEREGNUM)
  87                 return -1;
  88         return cache[reg];
  89 }
  90
  91 /*
  92  * write wm8510 register cache
  93  */
  94 static inline void wm8510_write_reg_cache(struct snd_soc_codec *codec,
  95         u16 reg, unsigned int value)
  96 {
  97         u16 *cache = codec->reg_cache;
  98         if (reg >= WM8510_CACHEREGNUM)
  99                 return;
 100         cache[reg] = value;
 101 }
 102
 103 /*
 104  * write to the WM8510 register space
 105  */
 106 static int wm8510_write(struct snd_soc_codec *codec, unsigned int reg,
 107         unsigned int value)
 108 {
 109         u8 data[2];
 110
 111         /* data is
 112          *   D15..D9 WM8510 register offset
 113          *   D8...D0 register data
 114          */
 115         data[0] = (reg << 1) | ((value >> 8) & 0x0001);
 116         data[1] = value & 0x00ff;
 117
 118         wm8510_write_reg_cache(codec, reg, value);
 119         if (codec->hw_write(codec->control_data, data, 2) == 2)
 120                 return 0;
 121         else
 122                 return -EIO;
 123 }
 124
 125 #define wm8510_reset(c) wm8510_write(c, WM8510_RESET, 0)
 126
 127 static const char *wm8510_companding[] = { "Off", "NC", "u-law", "A-law" };
 128 static const char *wm8510_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
 129 static const char *wm8510_alc[] = { "ALC", "Limiter" };
 130
 131 static const struct soc_enum wm8510_enum[] = {
 132         SOC_ENUM_SINGLE(WM8510_COMP, 1, 4, wm8510_companding), /* adc */
 133         SOC_ENUM_SINGLE(WM8510_COMP, 3, 4, wm8510_companding), /* dac */
 134         SOC_ENUM_SINGLE(WM8510_DAC,  4, 4, wm8510_deemp),
 135         SOC_ENUM_SINGLE(WM8510_ALC3,  8, 2, wm8510_alc),
 136 };
 137
 138 static const struct snd_kcontrol_new wm8510_snd_controls[] = {
 139
 140 SOC_SINGLE("Digital Loopback Switch", WM8510_COMP, 0, 1, 0),
 141
 142 SOC_ENUM("DAC Companding", wm8510_enum[1]),
 143 SOC_ENUM("ADC Companding", wm8510_enum[0]),
 144
 145 SOC_ENUM("Playback De-emphasis", wm8510_enum[2]),
 146 SOC_SINGLE("DAC Inversion Switch", WM8510_DAC, 0, 1, 0),
 147
 148 SOC_SINGLE("Master Playback Volume", WM8510_DACVOL, 0, 127, 0),
 149
 150 SOC_SINGLE("High Pass Filter Switch", WM8510_ADC, 8, 1, 0),
 151 SOC_SINGLE("High Pass Cut Off", WM8510_ADC, 4, 7, 0),
 152 SOC_SINGLE("ADC Inversion Switch", WM8510_COMP, 0, 1, 0),
 153
 154 SOC_SINGLE("Capture Volume", WM8510_ADCVOL,  0, 127, 0),
 155
 156 SOC_SINGLE("DAC Playback Limiter Switch", WM8510_DACLIM1,  8, 1, 0),
 157 SOC_SINGLE("DAC Playback Limiter Decay", WM8510_DACLIM1,  4, 15, 0),
 158 SOC_SINGLE("DAC Playback Limiter Attack", WM8510_DACLIM1,  0, 15, 0),
 159
 160 SOC_SINGLE("DAC Playback Limiter Threshold", WM8510_DACLIM2,  4, 7, 0),
 161 SOC_SINGLE("DAC Playback Limiter Boost", WM8510_DACLIM2,  0, 15, 0),
 162
 163 SOC_SINGLE("ALC Enable Switch", WM8510_ALC1,  8, 1, 0),
 164 SOC_SINGLE("ALC Capture Max Gain", WM8510_ALC1,  3, 7, 0),
 165 SOC_SINGLE("ALC Capture Min Gain", WM8510_ALC1,  0, 7, 0),
 166
 167 SOC_SINGLE("ALC Capture ZC Switch", WM8510_ALC2,  8, 1, 0),
 168 SOC_SINGLE("ALC Capture Hold", WM8510_ALC2,  4, 7, 0),
 169 SOC_SINGLE("ALC Capture Target", WM8510_ALC2,  0, 15, 0),
 170
 171 SOC_ENUM("ALC Capture Mode", wm8510_enum[3]),
 172 SOC_SINGLE("ALC Capture Decay", WM8510_ALC3,  4, 15, 0),
 173 SOC_SINGLE("ALC Capture Attack", WM8510_ALC3,  0, 15, 0),
 174
 175 SOC_SINGLE("ALC Capture Noise Gate Switch", WM8510_NGATE,  3, 1, 0),
 176 SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8510_NGATE,  0, 7, 0),
 177
 178 SOC_SINGLE("Capture PGA ZC Switch", WM8510_INPPGA,  7, 1, 0),
 179 SOC_SINGLE("Capture PGA Volume", WM8510_INPPGA,  0, 63, 0),
 180
 181 SOC_SINGLE("Speaker Playback ZC Switch", WM8510_SPKVOL,  7, 1, 0),
 182 SOC_SINGLE("Speaker Playback Switch", WM8510_SPKVOL,  6, 1, 1),
 183 SOC_SINGLE("Speaker Playback Volume", WM8510_SPKVOL,  0, 63, 0),
 184 SOC_SINGLE("Speaker Boost", WM8510_OUTPUT, 2, 1, 0),
 185
 186 SOC_SINGLE("Capture Boost(+20dB)", WM8510_ADCBOOST,  8, 1, 0),
 187 SOC_SINGLE("Mono Playback Switch", WM8510_MONOMIX, 6, 1, 1),
 188 };
 189
 190 /* add non dapm controls */
 191 static int wm8510_add_controls(struct snd_soc_codec *codec)
 192 {
 193         int err, i;
 194
 195         for (i = 0; i < ARRAY_SIZE(wm8510_snd_controls); i++) {
 196                 err = snd_ctl_add(codec->card,
 197                                 snd_soc_cnew(&wm8510_snd_controls[i], codec,
 198                                         NULL));
 199                 if (err < 0)
 200                         return err;
 201         }
 202
 203         return 0;
 204 }
 205
 206 /* Speaker Output Mixer */
 207 static const struct snd_kcontrol_new wm8510_speaker_mixer_controls[] = {
 208 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_SPKMIX, 1, 1, 0),
 209 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_SPKMIX, 5, 1, 0),
 210 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_SPKMIX, 0, 1, 0),
 211 };
 212
 213 /* Mono Output Mixer */
 214 static const struct snd_kcontrol_new wm8510_mono_mixer_controls[] = {
 215 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_MONOMIX, 1, 1, 0),
 216 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_MONOMIX, 2, 1, 0),
 217 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_MONOMIX, 0, 1, 0),
 218 };
 219
 220 static const struct snd_kcontrol_new wm8510_boost_controls[] = {
 221 SOC_DAPM_SINGLE("Mic PGA Switch", WM8510_INPPGA,  6, 1, 0),
 222 SOC_DAPM_SINGLE("Aux Volume", WM8510_ADCBOOST, 0, 7, 0),
 223 SOC_DAPM_SINGLE("Mic Volume", WM8510_ADCBOOST, 4, 7, 0),
 224 };
 225
 226 static const struct snd_kcontrol_new wm8510_micpga_controls[] = {
 227 SOC_DAPM_SINGLE("MICP Switch", WM8510_INPUT, 0, 1, 0),
 228 SOC_DAPM_SINGLE("MICN Switch", WM8510_INPUT, 1, 1, 0),
 229 SOC_DAPM_SINGLE("AUX Switch", WM8510_INPUT, 2, 1, 0),
 230 };
 231
 232 static const struct snd_soc_dapm_widget wm8510_dapm_widgets[] = {
 233 SND_SOC_DAPM_MIXER("Speaker Mixer", WM8510_POWER3, 2, 0,
 234         &wm8510_speaker_mixer_controls[0],
 235         ARRAY_SIZE(wm8510_speaker_mixer_controls)),
 236 SND_SOC_DAPM_MIXER("Mono Mixer", WM8510_POWER3, 3, 0,
 237         &wm8510_mono_mixer_controls[0],
 238         ARRAY_SIZE(wm8510_mono_mixer_controls)),
 239 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8510_POWER3, 0, 0),
 240 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8510_POWER2, 0, 0),
 241 SND_SOC_DAPM_PGA("Aux Input", WM8510_POWER1, 6, 0, NULL, 0),
 242 SND_SOC_DAPM_PGA("SpkN Out", WM8510_POWER3, 5, 0, NULL, 0),
 243 SND_SOC_DAPM_PGA("SpkP Out", WM8510_POWER3, 6, 0, NULL, 0),
 244 SND_SOC_DAPM_PGA("Mono Out", WM8510_POWER3, 7, 0, NULL, 0),
 245
 246 SND_SOC_DAPM_PGA("Mic PGA", WM8510_POWER2, 2, 0,
 247                  &wm8510_micpga_controls[0],
 248                  ARRAY_SIZE(wm8510_micpga_controls)),
 249 SND_SOC_DAPM_MIXER("Boost Mixer", WM8510_POWER2, 4, 0,
 250         &wm8510_boost_controls[0],
 251         ARRAY_SIZE(wm8510_boost_controls)),
 252
 253 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8510_POWER1, 4, 0),
 254
 255 SND_SOC_DAPM_INPUT("MICN"),
 256 SND_SOC_DAPM_INPUT("MICP"),
 257 SND_SOC_DAPM_INPUT("AUX"),
 258 SND_SOC_DAPM_OUTPUT("MONOOUT"),
 259 SND_SOC_DAPM_OUTPUT("SPKOUTP"),
 260 SND_SOC_DAPM_OUTPUT("SPKOUTN"),
 261 };
 262
 263 static const struct snd_soc_dapm_route audio_map[] = {
 264         /* Mono output mixer */
 265         {"Mono Mixer", "PCM Playback Switch", "DAC"},
 266         {"Mono Mixer", "Aux Playback Switch", "Aux Input"},
 267         {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"},
 268
 269         /* Speaker output mixer */
 270         {"Speaker Mixer", "PCM Playback Switch", "DAC"},
 271         {"Speaker Mixer", "Aux Playback Switch", "Aux Input"},
 272         {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"},
 273
 274         /* Outputs */
 275         {"Mono Out", NULL, "Mono Mixer"},
 276         {"MONOOUT", NULL, "Mono Out"},
 277         {"SpkN Out", NULL, "Speaker Mixer"},
 278         {"SpkP Out", NULL, "Speaker Mixer"},
 279         {"SPKOUTN", NULL, "SpkN Out"},
 280         {"SPKOUTP", NULL, "SpkP Out"},
 281
 282         /* Microphone PGA */
 283         {"Mic PGA", "MICN Switch", "MICN"},
 284         {"Mic PGA", "MICP Switch", "MICP"},
 285         { "Mic PGA", "AUX Switch", "Aux Input" },
 286
 287         /* Boost Mixer */
 288         {"Boost Mixer", "Mic PGA Switch", "Mic PGA"},
 289         {"Boost Mixer", "Mic Volume", "MICP"},
 290         {"Boost Mixer", "Aux Volume", "Aux Input"},
 291
 292         {"ADC", NULL, "Boost Mixer"},
 293 };
 294
 295 static int wm8510_add_widgets(struct snd_soc_codec *codec)
 296 {
 297         snd_soc_dapm_new_controls(codec, wm8510_dapm_widgets,
 298                                   ARRAY_SIZE(wm8510_dapm_widgets));
 299
 300         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 301
 302         snd_soc_dapm_new_widgets(codec);
 303         return 0;
 304 }
 305
 306 struct pll_ {
 307         unsigned int pre_div:4; /* prescale - 1 */
 308         unsigned int n:4;
 309         unsigned int k;
 310 };
 311
 312 static struct pll_ pll_div;
 313
 314 /* The size in bits of the pll divide multiplied by 10
 315  * to allow rounding later */
 316 #define FIXED_PLL_SIZE ((1 << 24) * 10)
 317
 318 static void pll_factors(unsigned int target, unsigned int source)
 319 {
 320         unsigned long long Kpart;
 321         unsigned int K, Ndiv, Nmod;
 322
 323         Ndiv = target / source;
 324         if (Ndiv < 6) {
 325                 source >>= 1;
 326                 pll_div.pre_div = 1;
 327                 Ndiv = target / source;
 328         } else
 329                 pll_div.pre_div = 0;
 330
 331         if ((Ndiv < 6) || (Ndiv > 12))
 332                 printk(KERN_WARNING
 333                         "WM8510 N value %d outwith recommended range!d\n",
 334                         Ndiv);
 335
 336         pll_div.n = Ndiv;
 337         Nmod = target % source;
 338         Kpart = FIXED_PLL_SIZE * (long long)Nmod;
 339
 340         do_div(Kpart, source);
 341
 342         K = Kpart & 0xFFFFFFFF;
 343
 344         /* Check if we need to round */
 345         if ((K % 10) >= 5)
 346                 K += 5;
 347
 348         /* Move down to proper range now rounding is done */
 349         K /= 10;
 350
 351         pll_div.k = K;
 352 }
 353
 354 static int wm8510_set_dai_pll(struct snd_soc_codec_dai *codec_dai,
 355                 int pll_id, unsigned int freq_in, unsigned int freq_out)
 356 {
 357         struct snd_soc_codec *codec = codec_dai->codec;
 358         u16 reg;
 359
 360         if (freq_in == 0 || freq_out == 0) {
 361                 /* Clock CODEC directly from MCLK */
 362                 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK);
 363                 wm8510_write(codec, WM8510_CLOCK, reg & 0x0ff);
 364
 365                 /* Turn off PLL */
 366                 reg = wm8510_read_reg_cache(codec, WM8510_POWER1);
 367                 wm8510_write(codec, WM8510_POWER1, reg & 0x1df);
 368                 return 0;
 369         }
 370
 371         pll_factors(freq_out*8, freq_in);
 372
 373         wm8510_write(codec, WM8510_PLLN, (pll_div.pre_div << 4) | pll_div.n);
 374         wm8510_write(codec, WM8510_PLLK1, pll_div.k >> 18);
 375         wm8510_write(codec, WM8510_PLLK2, (pll_div.k >> 9) & 0x1ff);
 376         wm8510_write(codec, WM8510_PLLK3, pll_div.k & 0x1ff);
 377         reg = wm8510_read_reg_cache(codec, WM8510_POWER1);
 378         wm8510_write(codec, WM8510_POWER1, reg | 0x020);
 379
 380         /* Run CODEC from PLL instead of MCLK */
 381         reg = wm8510_read_reg_cache(codec, WM8510_CLOCK);
 382         wm8510_write(codec, WM8510_CLOCK, reg | 0x100);
 383
 384         return 0;
 385 }
 386
 387 /*
 388  * Configure WM8510 clock dividers.
 389  */
 390 static int wm8510_set_dai_clkdiv(struct snd_soc_codec_dai *codec_dai,
 391                 int div_id, int div)
 392 {
 393         struct snd_soc_codec *codec = codec_dai->codec;
 394         u16 reg;
 395
 396         switch (div_id) {
 397         case WM8510_OPCLKDIV:
 398                 reg = wm8510_read_reg_cache(codec, WM8510_GPIO) & 0x1cf;
 399                 wm8510_write(codec, WM8510_GPIO, reg | div);
 400                 break;
 401         case WM8510_MCLKDIV:
 402                 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x1f;
 403                 wm8510_write(codec, WM8510_CLOCK, reg | div);
 404                 break;
 405         case WM8510_ADCCLK:
 406                 reg = wm8510_read_reg_cache(codec, WM8510_ADC) & 0x1f7;
 407                 wm8510_write(codec, WM8510_ADC, reg | div);
 408                 break;
 409         case WM8510_DACCLK:
 410                 reg = wm8510_read_reg_cache(codec, WM8510_DAC) & 0x1f7;
 411                 wm8510_write(codec, WM8510_DAC, reg | div);
 412                 break;
 413         case WM8510_BCLKDIV:
 414                 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x1e3;
 415                 wm8510_write(codec, WM8510_CLOCK, reg | div);
 416                 break;
 417         default:
 418                 return -EINVAL;
 419         }
 420
 421         return 0;
 422 }
 423
 424 static int wm8510_set_dai_fmt(struct snd_soc_codec_dai *codec_dai,
 425                 unsigned int fmt)
 426 {
 427         struct snd_soc_codec *codec = codec_dai->codec;
 428         u16 iface = 0;
 429         u16 clk = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x1fe;
 430
 431         /* set master/slave audio interface */
 432         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 433         case SND_SOC_DAIFMT_CBM_CFM:
 434                 clk |= 0x0001;
 435                 break;
 436         case SND_SOC_DAIFMT_CBS_CFS:
 437                 break;
 438         default:
 439                 return -EINVAL;
 440         }
 441
 442         /* interface format */
 443         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 444         case SND_SOC_DAIFMT_I2S:
 445                 iface |= 0x0010;
 446                 break;
 447         case SND_SOC_DAIFMT_RIGHT_J:
 448                 break;
 449         case SND_SOC_DAIFMT_LEFT_J:
 450                 iface |= 0x0008;
 451                 break;
 452         case SND_SOC_DAIFMT_DSP_A:
 453                 iface |= 0x00018;
 454                 break;
 455         default:
 456                 return -EINVAL;
 457         }
 458
 459         /* clock inversion */
 460         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 461         case SND_SOC_DAIFMT_NB_NF:
 462                 break;
 463         case SND_SOC_DAIFMT_IB_IF:
 464                 iface |= 0x0180;
 465                 break;
 466         case SND_SOC_DAIFMT_IB_NF:
 467                 iface |= 0x0100;
 468                 break;
 469         case SND_SOC_DAIFMT_NB_IF:
 470                 iface |= 0x0080;
 471                 break;
 472         default:
 473                 return -EINVAL;
 474         }
 475
 476         wm8510_write(codec, WM8510_IFACE, iface);
 477         wm8510_write(codec, WM8510_CLOCK, clk);
 478         return 0;
 479 }
 480
 481 static int wm8510_pcm_hw_params(struct snd_pcm_substream *substream,
 482         struct snd_pcm_hw_params *params)
 483 {
 484         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 485         struct snd_soc_device *socdev = rtd->socdev;
 486         struct snd_soc_codec *codec = socdev->codec;
 487         u16 iface = wm8510_read_reg_cache(codec, WM8510_IFACE) & 0x19f;
 488         u16 adn = wm8510_read_reg_cache(codec, WM8510_ADD) & 0x1f1;
 489
 490         /* bit size */
 491         switch (params_format(params)) {
 492         case SNDRV_PCM_FORMAT_S16_LE:
 493                 break;
 494         case SNDRV_PCM_FORMAT_S20_3LE:
 495                 iface |= 0x0020;
 496                 break;
 497         case SNDRV_PCM_FORMAT_S24_LE:
 498                 iface |= 0x0040;
 499                 break;
 500         case SNDRV_PCM_FORMAT_S32_LE:
 501                 iface |= 0x0060;
 502                 break;
 503         }
 504
 505         /* filter coefficient */
 506         switch (params_rate(params)) {
 507         case SNDRV_PCM_RATE_8000:
 508                 adn |= 0x5 << 1;
 509                 break;
 510         case SNDRV_PCM_RATE_11025:
 511                 adn |= 0x4 << 1;
 512                 break;
 513         case SNDRV_PCM_RATE_16000:
 514                 adn |= 0x3 << 1;
 515                 break;
 516         case SNDRV_PCM_RATE_22050:
 517                 adn |= 0x2 << 1;
 518                 break;
 519         case SNDRV_PCM_RATE_32000:
 520                 adn |= 0x1 << 1;
 521                 break;
 522         case SNDRV_PCM_RATE_44100:
 523         case SNDRV_PCM_RATE_48000:
 524                 break;
 525         }
 526
 527         wm8510_write(codec, WM8510_IFACE, iface);
 528         wm8510_write(codec, WM8510_ADD, adn);
 529         return 0;
 530 }
 531
 532 static int wm8510_mute(struct snd_soc_codec_dai *dai, int mute)
 533 {
 534         struct snd_soc_codec *codec = dai->codec;
 535         u16 mute_reg = wm8510_read_reg_cache(codec, WM8510_DAC) & 0xffbf;
 536
 537         if (mute)
 538                 wm8510_write(codec, WM8510_DAC, mute_reg | 0x40);
 539         else
 540                 wm8510_write(codec, WM8510_DAC, mute_reg);
 541         return 0;
 542 }
 543
 544 /* liam need to make this lower power with dapm */
 545 static int wm8510_set_bias_level(struct snd_soc_codec *codec,
 546         enum snd_soc_bias_level level)
 547 {
 548
 549         switch (level) {
 550         case SND_SOC_BIAS_ON:
 551                 wm8510_write(codec, WM8510_POWER1, 0x1ff);
 552                 wm8510_write(codec, WM8510_POWER2, 0x1ff);
 553                 wm8510_write(codec, WM8510_POWER3, 0x1ff);
 554                 break;
 555         case SND_SOC_BIAS_PREPARE:
 556         case SND_SOC_BIAS_STANDBY:
 557                 break;
 558         case SND_SOC_BIAS_OFF:
 559                 /* everything off, dac mute, inactive */
 560                 wm8510_write(codec, WM8510_POWER1, 0x0);
 561                 wm8510_write(codec, WM8510_POWER2, 0x0);
 562                 wm8510_write(codec, WM8510_POWER3, 0x0);
 563                 break;
 564         }
 565         codec->bias_level = level;
 566         return 0;
 567 }
 568
 569 #define WM8510_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 570                 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
 571                 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
 572
 573 #define WM8510_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 574         SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
 575
 576 struct snd_soc_codec_dai wm8510_dai = {
 577         .name = "WM8510 HiFi",
 578         .playback = {
 579                 .stream_name = "Playback",
 580                 .channels_min = 2,
 581                 .channels_max = 2,
 582                 .rates = WM8510_RATES,
 583                 .formats = WM8510_FORMATS,},
 584         .capture = {
 585                 .stream_name = "Capture",
 586                 .channels_min = 2,
 587                 .channels_max = 2,
 588                 .rates = WM8510_RATES,
 589                 .formats = WM8510_FORMATS,},
 590         .ops = {
 591                 .hw_params = wm8510_pcm_hw_params,
 592         },
 593         .dai_ops = {
 594                 .digital_mute = wm8510_mute,
 595                 .set_fmt = wm8510_set_dai_fmt,
 596                 .set_clkdiv = wm8510_set_dai_clkdiv,
 597                 .set_pll = wm8510_set_dai_pll,
 598         },
 599 };
 600 EXPORT_SYMBOL_GPL(wm8510_dai);
 601
 602 static int wm8510_suspend(struct platform_device *pdev, pm_message_t state)
 603 {
 604         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 605         struct snd_soc_codec *codec = socdev->codec;
 606
 607         wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF);
 608         return 0;
 609 }
 610
 611 static int wm8510_resume(struct platform_device *pdev)
 612 {
 613         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 614         struct snd_soc_codec *codec = socdev->codec;
 615         int i;
 616         u8 data[2];
 617         u16 *cache = codec->reg_cache;
 618
 619         /* Sync reg_cache with the hardware */
 620         for (i = 0; i < ARRAY_SIZE(wm8510_reg); i++) {
 621                 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
 622                 data[1] = cache[i] & 0x00ff;
 623                 codec->hw_write(codec->control_data, data, 2);
 624         }
 625         wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 626         wm8510_set_bias_level(codec, codec->suspend_bias_level);
 627         return 0;
 628 }
 629
 630 /*
 631  * initialise the WM8510 driver
 632  * register the mixer and dsp interfaces with the kernel
 633  */
 634 static int wm8510_init(struct snd_soc_device *socdev)
 635 {
 636         struct snd_soc_codec *codec = socdev->codec;
 637         int ret = 0;
 638
 639         codec->name = "WM8510";
 640         codec->owner = THIS_MODULE;
 641         codec->read = wm8510_read_reg_cache;
 642         codec->write = wm8510_write;
 643         codec->set_bias_level = wm8510_set_bias_level;
 644         codec->dai = &wm8510_dai;
 645         codec->num_dai = 1;
 646         codec->reg_cache_size = ARRAY_SIZE(wm8510_reg);
 647         codec->reg_cache = kmemdup(wm8510_reg, sizeof(wm8510_reg), GFP_KERNEL);
 648
 649         if (codec->reg_cache == NULL)
 650                 return -ENOMEM;
 651
 652         wm8510_reset(codec);
 653
 654         /* register pcms */
 655         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 656         if (ret < 0) {
 657                 printk(KERN_ERR "wm8510: failed to create pcms\n");
 658                 goto pcm_err;
 659         }
 660
 661         /* power on device */
 662         wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 663         wm8510_add_controls(codec);
 664         wm8510_add_widgets(codec);
 665         ret = snd_soc_register_card(socdev);
 666         if (ret < 0) {
 667                 printk(KERN_ERR "wm8510: failed to register card\n");
 668                 goto card_err;
 669         }
 670         return ret;
 671
 672 card_err:
 673         snd_soc_free_pcms(socdev);
 674         snd_soc_dapm_free(socdev);
 675 pcm_err:
 676         kfree(codec->reg_cache);
 677         return ret;
 678 }
 679
 680 static struct snd_soc_device *wm8510_socdev;
 681
 682 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 683
 684 /*
 685  * WM8510 2 wire address is 0x1a
 686  */
 687 #define I2C_DRIVERID_WM8510 0xfefe /* liam -  need a proper id */
 688
 689 static unsigned short normal_i2c[] = { 0, I2C_CLIENT_END };
 690
 691 /* Magic definition of all other variables and things */
 692 I2C_CLIENT_INSMOD;
 693
 694 static struct i2c_driver wm8510_i2c_driver;
 695 static struct i2c_client client_template;
 696
 697 /* If the i2c layer weren't so broken, we could pass this kind of data
 698    around */
 699
 700 static int wm8510_codec_probe(struct i2c_adapter *adap, int addr, int kind)
 701 {
 702         struct snd_soc_device *socdev = wm8510_socdev;
 703         struct wm8510_setup_data *setup = socdev->codec_data;
 704         struct snd_soc_codec *codec = socdev->codec;
 705         struct i2c_client *i2c;
 706         int ret;
 707
 708         if (addr != setup->i2c_address)
 709                 return -ENODEV;
 710
 711         client_template.adapter = adap;
 712         client_template.addr = addr;
 713
 714         i2c = kmemdup(&client_template, sizeof(client_template), GFP_KERNEL);
 715         if (i2c == NULL) {
 716                 kfree(codec);
 717                 return -ENOMEM;
 718         }
 719         i2c_set_clientdata(i2c, codec);
 720         codec->control_data = i2c;
 721
 722         ret = i2c_attach_client(i2c);
 723         if (ret < 0) {
 724                 err("failed to attach codec at addr %x\n", addr);
 725                 goto err;
 726         }
 727
 728         ret = wm8510_init(socdev);
 729         if (ret < 0) {
 730                 err("failed to initialise WM8510\n");
 731                 goto err;
 732         }
 733         return ret;
 734
 735 err:
 736         kfree(codec);
 737         kfree(i2c);
 738         return ret;
 739 }
 740
 741 static int wm8510_i2c_detach(struct i2c_client *client)
 742 {
 743         struct snd_soc_codec *codec = i2c_get_clientdata(client);
 744         i2c_detach_client(client);
 745         kfree(codec->reg_cache);
 746         kfree(client);
 747         return 0;
 748 }
 749
 750 static int wm8510_i2c_attach(struct i2c_adapter *adap)
 751 {
 752         return i2c_probe(adap, &addr_data, wm8510_codec_probe);
 753 }
 754
 755 /* corgi i2c codec control layer */
 756 static struct i2c_driver wm8510_i2c_driver = {
 757         .driver = {
 758                 .name = "WM8510 I2C Codec",
 759                 .owner = THIS_MODULE,
 760         },
 761         .id =             I2C_DRIVERID_WM8510,
 762         .attach_adapter = wm8510_i2c_attach,
 763         .detach_client =  wm8510_i2c_detach,
 764         .command =        NULL,
 765 };
 766
 767 static struct i2c_client client_template = {
 768         .name =   "WM8510",
 769         .driver = &wm8510_i2c_driver,
 770 };
 771 #endif
 772
 773 static int wm8510_probe(struct platform_device *pdev)
 774 {
 775         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 776         struct wm8510_setup_data *setup;
 777         struct snd_soc_codec *codec;
 778         int ret = 0;
 779
 780         info("WM8510 Audio Codec %s", WM8510_VERSION);
 781
 782         setup = socdev->codec_data;
 783         codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
 784         if (codec == NULL)
 785                 return -ENOMEM;
 786
 787         socdev->codec = codec;
 788         mutex_init(&codec->mutex);
 789         INIT_LIST_HEAD(&codec->dapm_widgets);
 790         INIT_LIST_HEAD(&codec->dapm_paths);
 791
 792         wm8510_socdev = socdev;
 793 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 794         if (setup->i2c_address) {
 795                 normal_i2c[0] = setup->i2c_address;
 796                 codec->hw_write = (hw_write_t)i2c_master_send;
 797                 ret = i2c_add_driver(&wm8510_i2c_driver);
 798                 if (ret != 0)
 799                         printk(KERN_ERR "can't add i2c driver");
 800         }
 801 #else
 802         /* Add other interfaces here */
 803 #endif
 804         return ret;
 805 }
 806
 807 /* power down chip */
 808 static int wm8510_remove(struct platform_device *pdev)
 809 {
 810         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 811         struct snd_soc_codec *codec = socdev->codec;
 812
 813         if (codec->control_data)
 814                 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF);
 815
 816         snd_soc_free_pcms(socdev);
 817         snd_soc_dapm_free(socdev);
 818 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 819         i2c_del_driver(&wm8510_i2c_driver);
 820 #endif
 821         kfree(codec);
 822
 823         return 0;
 824 }
 825
 826 struct snd_soc_codec_device soc_codec_dev_wm8510 = {
 827         .probe =        wm8510_probe,
 828         .remove =       wm8510_remove,
 829         .suspend =      wm8510_suspend,
 830         .resume =       wm8510_resume,
 831 };
 832 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8510);
 833
 834 MODULE_DESCRIPTION("ASoC WM8510 driver");
 835 MODULE_AUTHOR("Liam Girdwood");
 836 MODULE_LICENSE("GPL");